Type-writing machine.



Mmmm GUM. 23, i900.

TNVENTUR HE ATVTURNEY.

(Application led Apr. 4, 189B.)

W l IBABRN TYPE WBITNNG MMIHINE.

No. www.

(No Model.)

WENEEEES: ,JW AO Urtrrnn FFlQFLD WALTER J. BARRON, OF NEV YORK, N. Y., ASSIGNOR TO THE DENSMORE TYPEYRITER COMPANY, OF SYRACUSE, NEI/V YORK.

TYPE-HITING MACHINE.

SPECIFICATION forming part of Letters Patent No. 660,089, dated October 23, 1900. Application filed April 4, 1898. Serial No. 676,374. (No model.)

To a/ZZ whom t may concern,.-

Beit known that l, WALTER J. BARRON, a citizen of the United States, and a resident of the city of New York, borough of Brooklyn, county of Kings, and State of New York, have invented certain new and useful Improvements in Type-ll/Iriting Machines, of which the following' is a specification.

The principal object of this invention is to so construct the cylindrical platen of the typewriting machine as that it maybe used either with or without a card-holder,especially made with reference to the construction of the platen, so as to be att-ached to and detached from said platen; and to this main end Inyinvention consists in the various features of construction and combinations of devices hereinafter more fully described,and particularly pointed out in the appended claims.

In the accompanying drawings, Figure 1 is a longitudinal central vertical section of a platen embodying my improvements. Fig. 2 is a cross-section thereof, taken at the line 0c Qc of Fig. l. Fig. 3 is a perspective view of a portion of the spring. Fig. is a similar View of the card-holder or clamping-bar, and Fig. 5 is an elevation of one of the spring-pressed hooks or catches for the cardholder.

In the several views the same part will be found designated by the same numeral of reference.

1 l designate the end bars oi' a platen frame or carrier, which support the ends of the platen shaftor axle 2, the extremities of which are preferably provided with knobs or wheels 3, each knob or wheel having a hollow shank, which is attached to the axle by means of a radial set-screw el. The said platen shaft or axle passes centrally through the hollow core 5 of the platen and through the heads 6 and 7, screwed or otherwise attached to the ends thereof, and said shaft is attached to the hubs of the heads by means of a set-screw S, all in the usual manner. The head 7 is shown as provided with ratchet-teeth 9 for the custoinary line-spacing pawl. The platen-core is provided, as usual, with a rubber sheath or cover 10, which, near each end,is perforated radially, as is also the core, for thc passage therethrough of a bolt or catch device 117 whose inner end terminates within the bore of the interior support or core 5.

The bolt or catch device 11 is threaded at its inner end and at its outer end is provided with ahead 12 and a collar 13 therebelow, 55

held in place upon said bolt by means of a nut 17. In practice the bolts and spring and nuts are applied before the platen-heads and platen-axle are placed in position. The bolts are rst passed through the cover and the core and the spring is then inserted endwise 7o in the latter to about the position shown at Fig. 1, at which time, however, the ends of the spring, owing to the natural shape and tension of the spring, stand nearer the center of the platen. then bent upwardly or outwardly radially of the platen, so that its fork embraces the in ner end of the pin, and while the spring is held upon the pin the nut 17 is applied to coniine it in place. spring is then put upon the other bolt and similarly held in position. At the conclusion of this operation the bolts are held downwardly or inwardly under the tension of the arms of the spring, with the collars 13 seated 85 against the shoulders of the'holes in the platen-cover.

The card-holder or clamping-bar is designated by the numeral 18 and in cross-section may be curved to match the curvature of the 9o.

platen. This bar extends for practically the full length of the platen and at its right-hand end is slotted or bifurcated at 19 to embrace the neck of the right-hand bolt under its head 12, and the said bar at its left-hand end is 95 formed with a keyhole-slot 20 to engage with the neck and head of the left-hand bolt.

The bar or cardholder 18 is attached to the platen by first laying it upon the surface of the platen with the circular portion of the roo One end of the spring is The other end of the 8o keyhole-slot in register with the head of the Ylefthand bolt, which it passes over, and then by sliding the bar lengthwise of the platen toward the right, so that the parallel sides of the keyhole-slot come under the head of the left-hand bolt and so that the shorter parallel sides of the slot or fork at the right-hand end of the bar also pass under the head of the right-hand bolt, whereby the bar is locked in position against sidewise or circumfereniial movement. The said bar is at the same time held upon the surface of the platen with sufficient friction to prevent any accidental endwise movement thereof. This friction may be obtained by very slightly bending the bar back out of its geljleral plane or it may be obtained by slightly beveling the corners 21 of the slots, so that when the bar is slid endwise these corners, acting upon the under side of the head, will serve to very slightly lift or draw outwardly the bolts 11 against the tension of their spring-arms, and thus cause the heads of the screws to bear harder upon the parallel edges of the slots when the bar is pushed over into full engagement or to the position shown at Fig. 1. The bar is formed or provided With an extension 22 beyond the left-hand end of the platen, so as 1o provide a finger piece whereby the bar may be lifted from the surface of the platen for the major portion of its length and for the purpose of enabling the card to be printed to be properly introduced. When the card has been inserted, it may be adjusted to any desired place on the platen, and when the fingerpiece is released the spring will return the bar and cause it to properly hold or grip the card on the platen and carry it around therewith as the platen is rotated in line-space direction. Ofcourse, if desired, each bolt may be provided with a surrounding coiled spring in lieu of the flatspring shown and described and other changes in detail construction may be made without departing from the spirit of my invention.

When it may be desired to print upon pa-- per in the usual manner, the card-holder may be quickly removed by sliding it endwise toward the left until the eye of the keyhole-slot again registers with the head of the bolt at the left.

Although l prefer to have both bolts slide and provide a spring or spring-arm for each, nevertheless an acceptable construction may be made in which the right-hand bolt or a bolt at one end of the bar is xed in the platen and the left-hand bolt or the bolt at the opposite end is spring-pressed and movable, as described.

What I claim as new, and desire to secure by Letters Patent, is-

1. In a type-writing machine, the combination of a platen having two catches, one of which at least is mounted to slide radially and is provided with a spring, and an endwise-slidable card-holder constructed to be engaged with and disengaged from said catches and provided with a lifting fingerpiece.

2. In a type-writing machine, the combination of a platen having at each end a spring-pressed catch,and a slotted card-holder adapted to be engaged with and disengaged from said catches by endwise movements.

3. In a type-writing machine, the combination of a platen having at each end a spring-pressed headed bolt, and a card-holder having longitudinal slots to engage with said bolts.A

4L. In a type-Writing machine, the combination of a platen having at each end a radial perforation, a bolt extending therethrough to the inside of the platen, a spring tending to pull said bolt inwardly, and a card-holder having slots to engage with the heads of said boltS. v

5. In a type-writingmachine, the combination of a platen provided with a hollow core and a sheath or cover, a radial hole at each end of said platen, a shoulder or seat at each hole, a bolt extending through said hole and formed with a collar and a head and an intervening neck, a spring for said bolt, and a card-holder constructed to be engaged by the heads of said bolts.

6. In a type-writing machine, the combination of platen, a radially-arranged bolt at each end thereof, a spring for said bolt, and a card-holder having longitudinal slots for engagement by said bolts and also having a finger-piece.

7. ln a type-writing machine, the combination of a platen having a radially-arranged bolt at each end comprising a head, a collar and an intervening neck, the bar-spring 15 forked at each end for embracing the inner ends of said bolts, nuts for holding said spring in place, and a card-holder havinglongitudinal slots anda finger-piece.

8. In a type-writing machine, the combination of a platen having a headed catch at each end and a card-holder slotted at each end to enable the card-holder to be attached to and detached from the platen.

Signed at the borough of Manhattan, in the city, county, and State of New York, this 2d day of April, A. D. 1898.

WALTER J. BARRON.

Witnesses:

K. V. DONOVAN, ETHEL WELLS.

IOC

I I O MMA., 

